Toshiba Khanum, Msc Chemistry, 2005-2007, Supervised by Dr. Izhar-ul-Haq Khan Study of environment friendly gold extraction processes / Toshiba Khanum - Lahore : Division of Science & Technology, University of Education, 2007 - 48 p. ISBN: (hbk) Subjects--Topical Terms: Chemistry--Environment Friendly--Gold--Extraction Dewey Class. No.: 549.1 / St9468